iso_fortran_env

[Vivek Rao]

For Lahey/Fujitsu Fortran for Linux, the values of the
constants in the ISO_FORTRAN_ENV module are shown
below. I'd like to write an analogous module that I
can use in gfortran, until the module is implemented
in the compiler. What would the values be, for
gfortran on Windows -- i386-pc-mingw32? Thanks.
 
module ISO_FORTRAN_ENV

  ! Nonintrinsic version for Lahey/Fujitsu Fortran for
Linux.
  ! See Subclause 13.8.2 of the Fortran 2003 standard.

  implicit NONE
  public

  integer, parameter :: Character_Storage_Size = 8
  integer, parameter :: Error_Unit = 0
  integer, parameter :: File_Storage_Size = 8
  integer, parameter :: Input_Unit = 5
  integer, parameter :: IOSTAT_END = -1
  integer, parameter :: IOSTAT_EOR = -2
  integer, parameter :: Numeric_Storage_Size = 32
  integer, parameter :: Output_Unit = 6

end module ISO_FORTRAN_ENV